Sewer-vent.



H. G. WILLIAMS. 'SEWER VENT.

APPLIGATION FILED JUNE 19, 1908.

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HENRY C. WILLIAMS, OF MILWAUKEE, WISCONSIN.

SEWER-VENT.

Specification of Letters Patent.

Application filed .Tune 19, 1908.

Patented .Tune 15, 1909.

Serial No. 439,289.

T 0 all 'whom it may concern.'

Be it known that I, HENRY C. IIILLIAMS, residing in Milwaukee, in the county of Milwaukee and State of Illisconsin, have invented new and useful Improvements in Sewer-Vents, of which the following is a description, reference being had to the accompanying drawings, which are a part of this specification.

My invention has relation to improvements in sewer vents.

Under certain conditions, as for instance in the case of an unusually heavy rain, the main sewer of a sewerage system is fre quently incapable of taking care of the augmented quantity of water going to waste, and in such cases, the water backs up in the sewer pipes of buildings which lead to the main sewer, and flows out through the water closet bowls, sinks, stationary wash-stands, etc., necessarily frequently resulting in considerable damage.

It is the primary object of my invention to provide a simple form of vent which will permit of the escape of surplus water, and thus absolutely prevent occurrences of the above description.

Vilith this primary object, and other incidental objects, in view, the invention consists of the devices and parts, or their equivalents, as hereinafter set forth.

In the accompanying drawing, Figure 1 is an illustration in elevation of a fragment of a pipe, the upper end thereof being equipped with my improvements, and the valve of the improved mechanism being shown as raised; Fig. 2 is a plan view of Fig. 1; Fig. 3 is a view looking on the under side of the construction shown in Fig. 1; and Fig. 4 is a vertical section through substantially one-half of the mechanism shown in Fig. 1, illustrating the valve in its closed position, and showing a portion of a cement sidewalk.

Referring to the drawing, the numeral 4 indicates an upright pipe, which at its lower end connects with the sewer pipe (not shown) which leads from a building and connects to the main sewer.

An upper plate 5, preferably of cast metal, is provided, and this plate is formed with a central opening 6. At this central opening the metal of the plate is fianged downwardly to form an annular fiange 7, and from the lower end of the depending flange, the metal is extended inwardly at right angles to form an annular ledge 8. The inner edge of this ledge is threaded, and the threads are adapted to engage the threads formed at the upper end of the pipe 4. The plate is turned down on the threads to such an extent that its upper fiat portion will be on a plane below the upper end of the pipe 4. The valve or cover, indicated by the numeral 9, is in the form of a flat disk provided on its under side with a series of depending cylindrical lugs 10.

As the valve is required to move up and down, it is necessary that it should be guided in such movement, and as a convenient guiding mechanism I employ a plurality of rods 11, preferably four in number, depending from the lugs 10 and extending through openings 12 in the ledge S, and freely entering the tubes 13 depending from the under side of said ledge. The lower ends of the tubes 13 are closed by means of screw caps 14, and in order to provide for the escape from the tubes of any water that may accumulate therein, each cap is advisably pro vided with a small port or opening 15.

The valve 9 and depending rods 11 are preferably of brass, or other material not subject to rust, or corrosion.

It is preferred that the rods 11 be removably connected to the lugs of the valve. I therefore thread the upper ends of the rods and turn these threads into threaded sockets 16 formed in said lugs. The upper ends of the tubes 13 are also preferably threaded to engage threaded sockets 17 in the under side of the ledge 8. By this provision, all thc parts may be readily disconnected when necessary or desirable.

The pipe 4, it will be understood, is intended to extend up through the sidewalk, and in Fig. 4 I show it as extending up into a cement sidewalk 18, an opening 19 being left or formed in the sidewalk of sufficient circum ference to allow the lugs 10 of the valve to extend therein. The cement is laid over the upper fiat portion of the plate 5, and is of such thickness that its upper surface will be flush with the upper surface of the valve, when said valve is lowered, as clearly shown in Fig. 4. It is therefore necessary in first adjusting the plate 5 that it be turned down on the upper end of the pipe 4 a suicient distance to permit of the required thickness of cement, and at the same time insure of the cement being flush with the valve, as before stated.

In cases where the device is used in connection with wooden sidewalks, the upper CAD ilat portion ol the plate 5 is countersunk into the wood, so that its upper surface will lie llush with the upper surface of the wood. Screws are then passed through openings 2O and turn into the sidewalk for the purpose of securing the plate.

Normally the valve is in the closed position shown in Fig. 4. If on account of heavy rains, the main sewer is unable to take care of the increased volume of water, and the water backs up in the sewerage system, it will necessarily rise in the pipe 4, and when it reaches the top of the pipe it necessarily acts on the valve, and raises the same, as shown in Fig. l, thereby aflording a vent or outlet for the water. As soon as the sewer is relieved to such an extent as to provide for its taking care oll the water, the valve lowers to its Fig. l position. The valve or cover 9 also forms an air vent, inasmuch as even when in its closed position the fit thereof against the upper end of pipe t is not tight cr close enough to lorin an air tight joint.

What I claim as my invention is;

1. In a sewer vent, the combination of a plate provided with an opening, said plate secured horizontally to a sidewalk, and provided with a depending llange, and with a flange extending inwardly at right angles from the depending lange, the inwardly extending flange having its inner edge threaded, a pipe connected to the main sewerage system, and having its upper end provided with threads which the threads ol' the inwardly extending flange ol' the plate are adapted to engage, whereby the plate may be turned down on the upper end ol the pipe i'or a desired distance, to permit ol' said pipe extending into an opening :formed in the sidewalk, a valve normally closing the upper end oi' the pipe, but adapted to be forced to an open position by water pressure, when the water backs up in the sewer, said valve, when normally closing the pipe, being lush or substantially iush with the upper surface 0l' the sidewalk, rods depending from the valve, and guides adjacent to the side of the pipe, which guides the r'ods are adapted to slidingly it.-

2. A sewer vent, comprising a plate provided with an opening and secured horizontally to a sidewalk, an open ended pipe extending through the plate opening for a desired distance and having its lower portion connected to a sewage system, a cover normally closing the upper open end of the pipe and arranged to serve asa valve and open to relieve the system when water backs up in the sewer, and guiding means depending from the cover.

3. A sewer vent, comprising a plate provided with an opening and secured horizontally to a sidewalk, an open ended pipe extending through the plate opening for a desired distance and having its lower portion connected to a sewage system, a cover normally closing the upper open end of the pipe and arranged to serve as a valve and open to relieve the system when water backs up in the sewer, and guide rods depending from the cover and positioned in suitable guiding means provided on the plate.

4. A sewer vent, comprising a plate provided with an opening and secured horizontally to a sidewalk, guide tubes depending from said plate, an open ended pipe extending through the plate opening 'lor a desired distance and connected thereto and having its lower portion connected to a sewage system, a cover normally closing the upper open end of the pipe and arranged to serve as a valve and open to relieve the system when water backs up in the sewer, and guide rods depending from the cover adapted to slide in the guide tubes. Y

In testimony whereof, I aix my signature, in presence of two witnesses.

HENRY C. ILLAMS.

`Witnesses z A. L. MORSELL, ANNA F. Sci-IMIDTBAUER. 

